How Much Can Solar Save in Mackinaw?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$135
Current Bill/mo
$142
Est. Lease + Battery
7.5 yrs
Payback Period
$36,341
25-Year Savings
What You're Paying Now
Without solar, here's what Ameren Illinois electricity will cost you over time at 6% annual rate increases.
Monthly Bill
$135
Annual Cost
$1,620
25-Year Cost (No Solar)
$88,881
Your Solar Investment
7.5 kW System
$21,750
$11,993
After All IL Incentives
DG Rebate ($300/kW)-$2,250
Illinois Shines RECs (lump sum, ~18 mo)-$7,507
With vs Without Solar in Mackinaw
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $135/mo | $132/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | $-20/mo |
| 5-Year Cost | $8,748 | $7,920 |
| 25-Year Cost | $88,881 | $52,540 |
| Rate Control | None — utility sets rates | Fixed at $0.10/kWh (avg.) for 15 years |
| Home Value Impact | None | +$15,000–$25,000 (tax-exempt) |
Your Solar Savings Over Time
Estimated 25-Year Total Savings
$36,341
Without Solar
With Solar
Year 1
$1,620
$1,859
Year 2Payback Year
$3,337
-$3,766
Year 5
$9,132
$2,043
Year 10
$21,353
$12,398
Year 15
$37,707
$23,907
Year 20
$59,593
$37,060
Year 25
$88,881
$52,539
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $1,620 | $1,859 | -$239 |
| Year 2Payback | $3,337 | -$3,766 | $7,103 |
| Year 3 | $5,157 | -$1,858 | $7,016 |
| Year 4 | $7,087 | $77 | $7,010 |
| Year 5 | $9,132 | $2,043 | $7,089 |
| Year 6 | $11,300 | $4,040 | $7,260 |
| Year 7 | $13,598 | $6,071 | $7,527 |
| Year 8 | $16,034 | $8,140 | $7,894 |
| Year 9 | $18,616 | $10,247 | $8,368 |
| Year 10 | $21,353 | $12,398 | $8,955 |
| Year 11 | $24,254 | $14,594 | $9,660 |
| Year 12 | $27,329 | $16,840 | $10,490 |
| Year 13 | $30,589 | $19,138 | $11,451 |
| Year 14 | $34,044 | $21,492 | $12,552 |
| Year 15 | $37,707 | $23,907 | $13,800 |
| Year 16 | $41,589 | $26,388 | $15,202 |
| Year 17 | $45,705 | $28,938 | $16,767 |
| Year 18 | $50,067 | $31,563 | $18,504 |
| Year 19 | $54,691 | $34,268 | $20,423 |
| Year 20 | $59,593 | $37,060 | $22,533 |
| Year 21 | $64,788 | $39,943 | $24,845 |
| Year 22 | $70,296 | $42,926 | $27,370 |
| Year 23 | $76,133 | $46,014 | $30,119 |
| Year 24 | $82,321 | $49,216 | $33,105 |
| Year 25 | $88,881 | $52,539 | $36,341 |
Start Saving in Mackinaw
Get a free, personalized solar analysis based on your actual Ameren Illinois bill and roof. Lease or own — we'll find the best option.
✓ $0 down lease available — save from day 1 with no upfront cost
Ameren Illinois rates projected to rise again next year. Lock in savings now.